What would be the best approach to curbing excessive human population growth?
A. lowering birth rates through education and family planning
B. a return to historical health care practices
C. embracing traditional agricultural practices
D. encouraging women to postpone children till after age 35
Answer: A
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Disruption of neural signaling can produce profound changes in mood and behavior. Cocaine exerts its effects by
A. blocking dopamine reuptake from synapses. B. blocking serotonin reuptake from synapses. C. preventing neurotransmitter vesicle fusion with presynaptic neuron membranes. D. blocking the enzyme acetylcholinesterase. E. binding to the GABA receptor to enhance inhibitory neurotransmission.
Not much physical evidence of life is available from rocks of the Precambrian because these ancientrocks:a
have been greatly eroded in most areas. b. have been deeply buried in most areas. c. have been deposited in oceanic trenches deep in the oceans. d. occupy inaccessible areas of mountainous regions. e. occupy the polar regions and are thus covered by glaciers
A benign tumor differs from a malignant tumor in that a benign tumor
A) is cancerous. B) spreads from the original site. C) does not metastasize. D) never causes health problems.
Which of the following is part of the limbic system?
A. cerebellum B. spinal cord C. primary somatosensory area D. amygdala E. reticular formation